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O-LevelPhysicsMagnetism5054/12 · Oct/Nov 2017 · Q331 Mark

Why is the coil of an electric motor wound on a soft-iron cylinder?

Ato decrease the electric current

Bto increase the electric current

Cto reverse the magnetic field

Dto strengthen the magnetic field

✓ Correct answer

D: to strengthen the magnetic field

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About this question

Topic: Magnetism, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2017 Paper 1 Variant 2, question 33.

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